The Lightning Network Grew by 1212% in 2 Years [pdf]

“There are no public metrics on how many people use Lightning, so critics point at metrics such as node count, channels, and capacity, which have plateaued over the past year and thus give a false impression that Lightning's adoption may be stagnating or declining.

Our research shows the opposite, as growth in the number of users, transactions, and volume has been accelerating significantly over the past years.”